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Electrophoretic display apparatus

a display apparatus and display technology, applied in the field of electrotrophoretic display apparatus, can solve the problems of limited size and weight of liquid crystal display, and achieve the effect of improving the reflectance of the display

Active Publication Date: 2012-06-21
HYDIS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The invention provides an electrophoretic display apparatus that can improve its reflectance. This is achieved by adding a reflection part to each pixel, which includes at least two layers with different refractive indexes. The upper surface of the second electrode is positioned at a higher height than the first substrate, which improves the reflectance of light incident from exterior. Additionally, the electrophoretic display apparatus may also include a barrier wall to improve the aperture ratio."

Problems solved by technology

However, since the liquid crystal display requires a backlight assembly to provide light to the liquid crystal, the slimness and weight of the liquid crystal display are limited largely by the backlight assembly.

Method used

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Examples

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Embodiment Construction

[0037]The invention is described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

[0038]It will be understood that when an element or layer is referred to as being “on”, “connected to” or “coupled to” another element or layer, it can be directly on, connected or coupled to the other element or layer or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,”“directly connected to” or “directly coupled to” another element or layer, there...

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Abstract

An electrophoretic display apparatus includes a first substrate including a plurality of pixels, a second substrate facing the first substrate, an electrophoretic material between the first and second substrates, and a first electrode on the first substrate or the second substrate. Each pixel includes a reflection part and a second electrode. The reflection part is on the first substrate and reflects light incident through the second substrate. The second electrode is on the first substrate and adjacent to the reflection part. The second electrode forms an electric field with the first electrode such that the electrophoretic material moves to the first electrode or the second electrode. An upper surface of the second electrode is positioned at a first height from the first substrate, and an upper surface of an uppermost layer of the reflection part is positioned at a second height higher than the first height.

Description

[0001]This application claims priority to Korean Patent Application No. 10-2010-0130060 filed on Dec. 17, 2010, and all the benefits accruing therefrom under 35 U.S.C. §119, the contents of which are herein incorporated by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to an electrophoretic display apparatus. More particularly, the invention relates to an electrophoretic display apparatus capable of improving reflectance thereof[0004]2. Description of the Related Art[0005]A liquid crystal display displays an image using optical properties of liquid crystal and has characteristics, such as slimness, lightweight, etc., compared to a cathode ray tube. However, since the liquid crystal display requires a backlight assembly to provide light to the liquid crystal, the slimness and weight of the liquid crystal display are limited largely by the backlight assembly.[0006]An electrophoretic display apparatus displays an image us...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G02F1/167G02F1/1676G02F1/16761G02F1/16762G02F1/1677G02F1/1685
CPCG02F1/167G02F2203/02G02F2201/40G02F2001/1676G02F1/1676G02F1/16762G02F1/1685G02F1/16761G02F1/1677G02F2001/1678
Inventor KWON, SEONGGYUYEO, GILHWANKIM, MYUNG-EUNCHOI, BYUNGSEOKHONG, JUNG-MOOLEE, SONUKJANG, SANG-HEE
Owner HYDIS TECH